Claire ran 20 miles in 4 hours. What was her average speed?

Which element do you expect to be most like magnesium? Why? a.) potassium b.) silver c.) bromine d.) calcium e.) lead

How many liters of hydrogen gas are formed from the complete reaction of 1.04 mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and temperature of 316 K.

What are the characteristics of an extrusive rock

When working in the lab testing different ph levels of acids and bases what safety rule must you always follow?

Which action does the executive branch take as part of the government spending process? A. Executive branch agencies meet with Congress to negotiate a budget B. The president evaluates Congress's spending bills. C.

How many grams of the excess reactant remain assuming the reaction goes to completion and that you start with 15.5g of na2s and 12.1g cuso4?

Which elements can be found in the sun? a. hydrogen and oxygen b. helium and oxygen c. hydrogen and helium d. hydrogen and nitrogen?

A sample of hydrogen gas at 2.0 atmospheres and 273 k occupies a volume of 5.0 liters. the gas sample is completely transferred to a 10.0-liter sealed, rigid container.

To make sure that the white powder was all sodium chloride and not mixed with sodium hydrogen carbonate, would you need to add a little less or a little more hydrochloric acid to the reaction?

A 10.0 gram sample of h2o at 23.0c absorbs 209 joules of heat. what is the final temperature